Spin current manipulation for highly spin-polarized superfluid helium-3

2012 Fiscal Year Final Research Report

• Project/Area Number: 22684019
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: University of Hyogo
• Principal Investigator: YAMAGUCHI Akira 兵庫県立大学, 大学院・物質理学研究科, 准教授 (10302639)
• Project Period (FY): 2010 – 2012
• Keywords: 低温物性 / 量子流体 / 超流動 / ヘリウム3 / スピン偏極

Research Abstract

We have investigated for a spin current manipulation of the spin-polarized superfluid helium3-A1 phase, which enables us to boost spin polarization of liquid 3He to much greater level than feasible by available static magnetic fields. A cryostat working in ultra-low temperature was constructed and began to be operated. The detailed spin fluid dynamics in the A1 phase was studied as function of pressure, temperature, and magnetic fields. Based on the knowledge and experience, we have developed a new apparatus to boost spin polarization more efficiently.

Research Products

• [Journal Article] Recent Spin Pump Experiments on Superfluid 3He-A1 (2013)
  • Author(s): A. Yamaguchi,N. Kamada, G. Motoyama, A. Sumiyama, Y. Aoki, Y. Okuda, M. Kubota, and H. Kojima
  • Journal Title: J. Low Temp. Phys Volume: 171 Pages: 220-225
  • DOI: DOI:10.1007/s10909-012-0695-3
  • Peer Reviewed
• [Journal Article] Development of a 3He-hydraulic actuator for spin pump in superfluid 3He-A1 (2012)
  • Author(s): A. Yamaguchi, M. Wada, H. Tanaka, G. Motoyama, A. Sumiyama, Y. Aoki, Y. Okuda, S. Murakawa, Y. Karaki, M. Kubota, and H. Kojima
  • Journal Title: J. Phys.: Conf. Ser Volume: 400 Pages: 012081
  • DOI: DOI:10.1088/1742-6596/400/1/012081
  • Peer Reviewed
• [Journal Article] An Operation Circuit of a Micro-SQUID Magnetometer below 1 K (2011)
  • Author(s): A. Yamaguchi, M. Wada, R. Tani, K. Takeda, T. Matsumoto, H. Kashiwaya, G. Motoyama, S.Kashiwaya, S. Ohkoshi, and A. Sumiyama
  • Journal Title: J. Low Temp. Phys Volume: 162 Pages: 748-753
  • DOI: DOI:10.1007/s10909-010-0255-7
  • Peer Reviewed
• [Journal Article] Spin fluid dynamics observed by magnetic fountain effect and mechanical spin pumping effect in the ferromagnetic superfluid He-3 A1 phase (2010)
  • Author(s): Y. Aoki, A. Yamaguchi, K. Suzuki, H. Ishimoto, and H. Kojima
  • Journal Title: Phys. Rev. B Volume: 82 Pages: 0545271-054527112
  • DOI: DOI:10.1103/PhysRevB.82.054527
  • Peer Reviewed
• [Presentation] 超流動ヘリウム 3-A1相スピンポンプ実験のためのスーパリークの改良 II (2013)
  • Author(s): 鎌田尚史 (山口明)
  • Organizer: 日本物理学会 2013 春季大会
  • Place of Presentation: 広島大学(広島県)
  • Year and Date: 2013-03-27
• [Presentation] 超流動ヘリウム 3-A1相におけるスピンポンプ流 (2012)
  • Author(s): 山口明
  • Organizer: 日本物理学会 2012秋季大会
  • Place of Presentation: 横浜国立大学(神奈川県)
  • Year and Date: 2012-09-19
• [Presentation] Recent Spin Pump Experiments on Superfluid 3He-A1, QFS2012 (2012)
  • Author(s): A. Yamaguchi
  • Organizer: International Conference on Quantum Fluids and Solids
  • Place of Presentation: ランカスター(イギリス)
  • Year and Date: 2012-08-16
• [Presentation] 超流動ヘリウム3A1相スピンポンプ実験のためのスーパーリークの改良 (2012)
  • Author(s): 鎌田尚史(山口明)
  • Organizer: 日本物理学会 2012 年春季大会
  • Place of Presentation: 関西学院大学(兵庫県)
  • Year and Date: 2012-03-27
• [Presentation] Development of a 3He-hydraulic actuator for spin pump in superfluid 3He-A1 (2011)
  • Author(s): A. Yamaguchi
  • Organizer: 低温国際会議LT26
  • Place of Presentation: 北京(中国)
  • Year and Date: 2011-08-13
• [Remarks]
  • URL: http://www.sci.u-hyogo.ac.jp/material/low_temp/yamaguchi/yamaguchi.html